<!doctype html>
<html>
    <head>
        <meta charset="utf-8">
        <title>Globe - ECHARTS-GL</title>
        <meta name="viewport" content="width=device-width, initial-scale=1, user-scalable=no">
        <meta name="apple-mobile-web-app-capable" content="yes"> <!-- Fullscreen Landscape on iOS -->
        <link rel="stylesheet" href="./common.css">
    </head>
    <body>
        <div id="main"></div>
        <script src="../node_modules/echarts/dist/echarts.js"></script>
        <script src="../dist/echarts-gl.js"></script>
        <script src="lib/jquery.min.js"></script>
        <script src="js/exportGL2OBJ.js"></script>
        <script src="lib/download.js"></script>
        <script src="js/commonUI.js"></script>
        <script>
            var chart = echarts.init(document.getElementById('main'));

            // http://visibleearth.nasa.gov/view_cat.php?categoryID=1484
            chart.setOption({
                toolbox: {
                    feature: {
                        myExportObj: {
                            title: 'Export OBJ',
                            icon: 'M4.7,22.9L29.3,45.5L54.7,23.4M4.6,43.6L4.6,58L53.8,58L53.8,43.6M29.2,45.1L29.2,0',
                            onclick: function () {
                                var res = echarts.exportGL2OBJ(chart, {
                                    mainType: 'globe',
                                    index: 0
                                }, {
                                    mtllib: 'globe'
                                });
                                download(res.obj, 'globe.obj', 'text/plain');
                                download(res.mtl, 'globe.mtl', 'text/plain');
                                res.textures.forEach(function (texture) {
                                    download(texture.data, texture.file, 'image/png');
                                });
                            }
                        }
                    }
                },
                globe: {

                    baseTexture: 'asset/world.topo.bathy.200401.jpg',
                    heightTexture: 'asset/elev_bump_4k.jpg',
                    // heightTexture: 'asset/bathymetry_bw_composite_4k.jpg',

                    displacementScale: 0.05,
                    displacementQuality: 'high',

                    shading: 'realistic',
                    realisticMaterial: {
                        roughness: 0.8,
                        metalness: 0
                    },

                    postEffect: {
                        enable: true
                    },
                    temporalSuperSampling: {
                        enable: true
                    },
                    light: {
                        ambient: {
                            intensity: 0
                        },
                        main: {
                            intensity: 6,
                            shadow: true
                        },
                        ambientCubemap: {
                            texture: 'asset/pisa.hdr',
                            exposure: 2,
                            diffuseIntensity: 0.1,
                            specularIntensity: 1
                        }
                    },
                    viewControl: {
                        zoomSensitivity: 0,
                        // autoRotate: false
                    }
                },
                series: []
            });

            window.addEventListener('resize', function () {
                chart.resize();
            });

        </script>
    </body>
</html>